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Concentrated Solar Power

In partnership with the Clean Energy Solutions Center (CESC)

Hugo Lucas Porta 01.05.2019

Supporters of this Expert Training Series

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Overview of the expert

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Hugo Lucas PortaHead of Energy

Dept, Factor20 years in RE

Sector- Worked for

governments and private sector on energy transition

strategies

Factor is an international group, specialized in providing global, innovative and sustainable solutions in areas such as climate change, energy, sustainability, trading and innovation.

Our key value is our people. We have offices in six countries, where our interdisciplinary team works for public and private stakeholders, international organizations and non-profit entities.

Our own history and experiences are based on constant innovation. This helps us target our services, by combining academic knowledge, technology and practical experience.

https://www.wearefactor.com/en/

Training Course Material

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2. Policies for

Large-Scale PV

Eight Modules1.

Policies for Distributed

PV

3. The Future

of Solar Policy

Expert Content and Analysis

4. Technical

Integration of Solar

6. Socio-

Economic Aspects

Up-to-date Market Insights

5. Market

Integration

7. Off-grid

Solar

8. Solar

Heating & Cooling

This Training is part of Module 2, and focuses on the Concentrated Solar Power

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Overview of the Training

1. Introduction: Learning Objective

2. Understanding Concentrated Solar Power

3. Main body of presentation

4. Concluding Remarks

5. Further Reading

6. Knowledge Check: Multiple-Choice Questions

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1. Introduction: Learning Objective

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Learning Objective

This lecture provides:

1 An overview of CSP technologies

2 Status and trends of CSP markets over the world

3 Discussion on the costs of CSP

4 Research and Development programs for CSP

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2. Understanding Concentrated Solar Power

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Understanding Concentrated Solar Power

Source: La Dehesa plant

Concentrated Solar Power (CSP), also called Solar ThermalPower Generation, plants produce electric power by usingmirror to concentrate a large area of sunlight onto a smallarea, the boiler.

Electricity is generated whenthe concentrated light isconverted to heat, whichdrives a heat engine (usuallya steam turbine) connectedto an electrical powergenerator.

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Calasparra plant. Fresnel technology

Concentrated solar power (CSP) plants can integratethermal energy storage systems to generate electricityduring cloudy periods or even several hours after the sunset.CSP systems can be also combined with combined cyclepower plants resulting in hybrid power plants which providehigh-value, dispatchable power.

Concentrated Solar Powersystems can be sized for villagepower (10 kilowatts) or grid-connected applications (more than100 megawatts).


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• At the beginning of the 70s, with the rapid increase in oilprices, is when the great impulse to solar concentrationtechnologies takes place.

• High intensity of research activity in Solar ConcentrationSystems was developed between the mid 70's and the end ofthe 80's.

• During the 1980s and 1990s, the first commercial initiativeswere built in the USA. (SEGS plants, in the Mojave desert ofCalifornia).

• The thermoelectric solar sector is currently in the commercialtakeoff phase throughout the world, and especially in Spain.

Worldwide historical evolution:


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Research and development centers

• The Solar Platform of Almería (PSA), Spain belongs to the Center forEnergy, Environmental and Technological Research (CIEMAT). It is thelargest public research and testing center dedicated to solarconcentration technologies.

• The Solar Platform Sanlúcar la Mayor (SOLUCAR): It belongs to theAbengoa group and it is the largest private centre of solar energy, withtechnologies of all the solar areas, mainly solar thermoelectric.

• Sandia National Laboratories, in EE.UU.: carries out the NSTTF(National Solar Thermal Test Facility), near Alburquerque in New Mexicowith a tower plant of 5 MW for component tests.

• Other centers with tower plants of 1-2 MW such as: WeizmannInstitute, in Israel, in Rehovot, Colonia (Germany) and soon in theFrench Pyrenees (former THEMIS plant).

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3. Main Body of Presentation

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Main Body of Presentation


2 Status and trends of CSP markets

3 Costs of CSP


trends and innovation

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An overview of CSP technologies

Thermoelectric solar energy groups four technological areas with different commercial maturity and different potential:

• TOWER

• PARABOLIC TROUGH

• PARABOLIC DISH

• LINEAR FRESNEL COLLECTOR


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Parabolic trough

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Linear Fresnel Collectors

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Power tower Central receiver

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Parabolic dish


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Hybridizing CSP – 100% renewable


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Hybridizing CSP-fossil fuels


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• On production cost alone, PV is, today, significantly cheaperthan CSP. It is also more modular and easier to design,construct, maintain and operate.

• When dispatchability is required, CSP+TES is cheaper toinstall and to run than PV with batteries, which gives CSP acompetitive advantage. Nevertheless this is changing fast.

• Hybridizing CSP with fuels can ease the path, reducingemissions while providing track record to CSP, and time toamortize plants in operation.

CSP, PV or Hybrid

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3 Costs of CSP



Status and trends of CSP markets

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Global Capacity by Country and Region, 2007-2017

Source: REN21 Renewables 2018 – Global Status Report .

Status and trends of CSP markets over the world

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Global Capacity and Additions, 2017


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CSP Thermal Energy Storage Global Capacity and Annual Additions, 2007-2017



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Evolution of the thermosolar capacity installed

Status and trends of CSP

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PT79%

HY3%

CT12%

DS0%

LF6%

PT HY CT DS LF

Trends in technology choice

Status and trends of CSP

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Source: International Energy Agency

Net CSP capacity additionsMain and accelerated case, 2012-2023


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Uncertainty in projections


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Power generation capacity (GW installed by 2030)

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3 Costs of CSP

4 Research and Development programmes for CSP


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Costs of CSP

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Costs of CSP

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Costs of CSP

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Costs of CSP

PTC and ST total installed cost reduction potential by source, 2015-2025

Cost reduction potential

Costs of CSP

cost reductions for CSP plants to 2025

Indirect EPC & owners costs

Costs of CSP

Cost reduction potentials of the solar field component of PTC and ST CSP plants by source, 2015-2025

Solar field components

Costs of CSP

Thermal energy storage

Costs of CSP

LCOE reduction potential

Costs of CSP

Sensitivity of the levelised cost of electricity of PTC and ST plants to variations in the WACC, 2015 and 2025

LCOE sensitivity to WACC

Costs of CSP

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3 Costs of CSP



R&D Programmes for CSP

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Equipment• New heat transfer fluids

• Structures and trackers

• Reflectors

• Receiver

• Thermal Energy Storage

System• Dispatchability

• Scales limits

• Use of water

• Hybridization

Some key aspects are not included in typical R&D

• Soft costs in development and EPC

• Risk reductions/ cost of capital

• New business models

R&D Programs for CSP

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Evolution of R&D private investment and aggregated

R&D Programs for CSP

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Evolution of R&D public investment

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4. Concluding Remarks

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Concluding Remarks

• Half a decade ago, expectations for CSP deployment werehigher than the current situation: most long-term forecasts andcountry plans have not been fulfilled.

• There is not only one reason for this:

the quick cost reduction of PV made it a more attractive alternative (so some efforts were moved from CSP to PV);

several other initiatives were halted, hoping that a PV-like cost reduction would bring CSP’s LCOE closer to grid parity;

when the cost reduction was not as quick as expected, the sector risked entering a vicious circle as a slower deployment further slowed cost reduction.

Concluding Remarks

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• The future development of CSP is linked to its ability to providevalue to the electric system in comparison with other alternatives.

• CSP’s strengths, beyond possible cost break through, are:

cheap storage; demand management capabilities; ancillary services, etc.

• There is potential for cost reduction in both hard and soft costs, butsome chapters (civil works, power block, BoP, EPC cost andOwner’s cost) have barely improved despite its significant impact.

• Soft costs are not a typical target in R&D programs.

Concluding Remarks

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Hybridization can be a key to the future of CSP:

• Hybridizing CSP with fuels can ease the path, reducingemissions while providing track record to CSP, and time toamortize plants in operation;

• CSP integration costs are as low as conventional, especiallyif hybridized;

• Risk is concentrated on investment in CSP, and on operationin conventional; hybrids can have a better balance betweenboth, diluting them.

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5. Further Reading

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REN21 - Renewables 2018 Global Status Report. http://www.ren21.net/gsr-2018/

IRENA – Renewable Power Generation Costs in 2017. https://www.irena.org/-/media/Files/IRENA/Agency/Publication/2018/Jan/IRENA_2017_Power_Costs_2018.pdf

NREL – “A Guide to Implementing Concentrating Solar Power in Production Cost Models” (2018).https://www.nrel.gov/docs/fy19osti/68527.pdf

ERSHUN DU, NING ZHANG, BRI-MATHIAS HODGE, CHONGQING KANG, BENJAMIN KROPOSKI, QING XIA – “Economic justification of concentrating solar power in high renewable energy penetrated power systems”. (2018).https://www.sciencedirect.com/science/article/pii/S0306261918305099?via%3Dihub

GREENPEACE INTERNATIONAL, ESTELA, SOLARPACES – “Solar Thermal Electricity: Global Outlook 2016”.http://www.estelasolar.org/wp-content/uploads/2016/02/GP-ESTELA-SolarPACES_Solar-Thermal-Electricity-Global-Outlook-2016_Full-report.pdf

ESTELA – “The Value of Solar Thermal Electricity. Cost vs. Value Approach”. (2016).http://www.estelasolar.org/Docs/2016_ESTELA_STE-CSP_Value_Final.pdf

http://www.ren21.net/gsr-2018/

https://www.irena.org/-/media/Files/IRENA/Agency/Publication/2018/Jan/IRENA_2017_Power_Costs_2018.pdf

https://www.nrel.gov/docs/fy19osti/68527.pdf

https://www.sciencedirect.com/science/article/pii/S0306261918305099?via%3Dihub

http://www.estelasolar.org/wp-content/uploads/2016/02/GP-ESTELA-SolarPACES_Solar-Thermal-Electricity-Global-Outlook-2016_Full-report.pdf

http://www.estelasolar.org/Docs/2016_ESTELA_STE-CSP_Value_Final.pdf

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NREL – “Methods for Analyzing the Economic Value of Concentrating Solar Power with Thermal EnergyStorage”. (2015).https://www.nrel.gov/docs/fy15osti/64256.pdf

IEA – “Technology Roadmap – Concentrating Solar Power”. (2010).http://www.solarpaces.org/wp-content/uploads/csp_roadmap.pdf

https://www.nrel.gov/docs/fy15osti/64256.pdf

http://www.solarpaces.org/wp-content/uploads/csp_roadmap.pdf

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6. Knowledge Checkpoint:Multiple Choice Questions

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